package com.leiou.stu_reg;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


//    检查登录名是否重复
@WebServlet("/stucheckuser")
public class stuCheckUserHandler extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
//        用什么方式显示汉字
        resp.setContentType("text/html;charset=UTF-8");

        String username=req.getParameter("username");
//        登录验证
        stuRegDao stuRegDao=new stuRegDaoImpl();
        boolean check_result=stuRegDao.checkusername(username);
//        将登录结果返回给浏览器
        if (check_result){
            resp.getWriter().write("Y");
        }else {
            resp.getWriter().write("N");
        }
    }
}
